. >> reporter: and aboard the black elk gas and oil platform, an inferno engulfed some of the 22 workers doing routine maintenance. charring a corner od the platform, a massive search is on for two men who jumped into the water and are listed as missing. 11 others were medivaced, four of them with severe burns. >> these two patients are in critical condition with major burns. >> reporter: according to black elk, a workman used the wrong kind of blow torch to cut the section of pipeline indicated by these arrows, setting off the oil inside. but the oil was not actively producing oil or gas, meaning there's little threat of a spill, according to the coast guard. >> the platform was confirmed shut in, before they started work, so, a nonproduction platform at the time. >> reporter: and tonight, oil sheen covers less than a half a square mile of the gulf. just 28 gallons. not enough to fill a large suv's gas tank. bp's deepwater horizon spilled enough daily to fill 82,000 suvs. and this accident took place in just 50 feet of water. over 80 miles from the deepwater horizon drilling in water a